Acronym stohix
Name octagram - hexateron duoprism
Circumradius sqrt[(17-6 sqrt(2))/12] = 0.842354
Face vector 48, 168, 286, 295, 188, 71, 14
Confer
more general:
n,hix-dip  
general polytopal classes:
Wythoffian polyexa  

As abstract polytope stohix is isomorphic to ohix, thereby replacing octagrams by octagons, resp. stop by op, resp. stotet by otet, resp. stopen by open.


Incidence matrix according to Dynkin symbol

x3o3o3o3o x4/3x

. . . . . .   . | 48 |   5  1  1 |  10  5  5 1 |  10 10 10  5 |  5 10 10 10 | 1  5  5 10 | 1 1 5
----------------+----+-----------+-------------+--------------+-------------+------------+------
x . . . . .   . |  2 | 120  *  * |   4  1  1 0 |   6  4  4  1 |  4  6  6  4 | 1  4  4  6 | 1 1 4
. . . . . x   . |  2 |   * 24  * |   0  5  0 1 |   0 10  0  5 |  0 10  0 10 | 0  5  0 10 | 1 0 5
. . . . . .   x |  2 |   *  * 24 |   0  0  5 1 |   0  0 10  5 |  0  0 10 10 | 0  0  5 10 | 0 1 5
----------------+----+-----------+-------------+--------------+-------------+------------+------
x3o . . . .   . |  3 |   3  0  0 | 160  *  * * |   3  1  1  0 |  3  3  3  1 | 1  3  3  3 | 1 1 3
x . . . . x   . |  4 |   2  2  0 |   * 60  * * |   0  4  0  1 |  0  6  0  4 | 0  4  0  6 | 1 0 4
x . . . . .   x |  4 |   2  0  2 |   *  * 60 * |   0  0  4  1 |  0  0  6  4 | 0  0  4  6 | 0 1 4
. . . . . x4/3x |  8 |   0  4  4 |   *  *  * 6    0  0  0  5 |  0  0  0 10 | 0  0  0 10 | 0 0 5
----------------+----+-----------+-------------+--------------+-------------+------------+------
x3o3o . . .   .   4 |   6  0  0 |   4  0  0 0 | 120  *  *  * |  2  1  1  0 | 1  2  2  1 | 1 1 2
x3o . . . x   .   6 |   6  3  0 |   2  3  0 0 |   * 80  *  * |  0  3  0  1 | 0  3  0  3 | 1 0 3
x3o . . . .   x   6 |   6  0  3 |   2  0  3 0 |   *  * 80  * |  0  0  3  1 | 0  0  3  3 | 0 1 3
x . . . . x4/3x  16 |   8  8  8 |   0  4  4 2 |   *  *  * 15   0  0  0  4 | 0  0  0  6 | 0 0 4
----------------+----+-----------+-------------+--------------+-------------+------------+------
x3o3o3o . .   .   5 |  10  0  0 |  10  0  0 0 |   5  0  0  0 | 48  *  *  * | 1  1  1  0 | 1 1 1
x3o3o . . x   .   8 |  12  4  0 |   8  6  0 0 |   2  4  0  0 |  * 60  *  * | 0  2  0  1 | 1 0 2
x3o3o . . .   x   8 |  12  0  4 |   8  0  6 0 |   2  0  4  0 |  *  * 60  * | 0  0  2  1 | 0 1 2
x3o . . . x4/3x  24 |  24 12 12 |   8 12 12 3 |   0  4  4  3 |  *  *  * 20 | 0  0  0  3 | 0 0 3
----------------+----+-----------+-------------+--------------+-------------+------------+------
x3o3o3o3o .   .   6 |  15  0  0 |  20  0  0 0 |  15  0  0  0 |  6  0  0  0 | 8  *  *  * | 1 1 0
x3o3o3o . x   .  10 |  20  5  0 |  20 10  0 0 |  10 10  0  0 |  2  5  0  0 | * 24  *  * | 1 0 1
x3o3o3o . .   x  10 |  20  0  5 |  20  0 10 0 |  10  0 10  0 |  2  0  5  0 | *  * 24  * | 0 1 1
x3o3o . . x4/3x  32 |  48 16 16 |  32 24 24 4 |   8 16 16  6 |  0  4  4  4 | *  *  * 15 | 0 0 2
----------------+----+-----------+-------------+--------------+-------------+------------+------
x3o3o3o3o x   .  12 |  30  6  0 |  40 15  0 0 |  30 20  0  0 | 12 15  0  0 | 2  6  0  0 | 4 * *
x3o3o3o3o .   x  12 |  30  0  6 |  40  0 15 0 |  30  0 20  0 | 12  0 15  0 | 2  0  6  0 | * 4 *
x3o3o3o . x4/3x  40 |  80 20 20 |  80 40 40 5 |  40 40 40 10 |  8 20 20 10 | 0  4  4  5 | * * 6

ox3oo3oo3oo xx4/3xx&#x   → height = sqrt(3/5) = 0.774597
({8/3} || stopen)

...

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